Circuit breaking contacts provided with condensers



June 30, 1931. A. YTTERBl-:RG 1,812,312

CIRCUIT BREAKING CONTACTS EROVIDED WITH CONDENSERS Filed May 8, 1929 and 1th@ self-ina ge of 'the comme@ mona lense? as impregnated cotton wire. In this manner,

fulfilled at a time in practice. Generally the length of the double conductor must be about 1 meter, and it will then be necessary to take special steps for further reducing the selfinduction. This can be done by making the two Aconductors 4 in the' shape of thin bands the thickness or which amounts to about 1/20 of the width, and arranging them vclosely together with the thinnest possible layer of insulation. A cross-section of such bands is shown in Fig. 2 in which the bands 4, which may be of suitable resistance material, as a chrome-nickel alloy, are separated only by a thin strip 5 of presspahn` or the like, and the l whole surrounded by a suitable insulation 6 it is possible to reduce the self-inductan'ce to about .1 microhenries per meter.q In such cases, it is sometimes not necessary to make the whole of the conductors out orn special resistance material, but a portion may be made out of a material of high conductivity, for 'instance copper. n

Iclaim as my invention l.' In combination, a pair of contacts, ra condenser in parallel thereto, and two coni ductors consisting ofspecial resistance alloy and lying close together at the maj or portion of their length and connecting said contacts to said condenser. A e v 2. Inucombination, a pair of contacts, a condenser in parallelthereto, and two bandshaped conductors of special resistance alloy lying flat together at the major portion of their length and connecting said contacts to said condenser. l

3. In an electrical regulator,- a pair of breaking cont-acts, a condenser, and two con Y ductors connecting said contacts 1n parallel Awlth said condenser and each comprising a special resistance alloy and arrangedthroughout the major `ortion of its lengthin close proximity to t e other conductor.

4. VIn an electrical regulator, a pair of breaking contacts,` a condenser, and two conductors connecting said contacts in parallel with said condenser and eachv conductor being made throughout. at least a part of its length of special resistance alloy and having a maximum width and minimum thickness and arranged at the major portion of its length ata minimum distance from the other 45. In a voltage regulator, a pair of contacts, a condenser connected in parallel therewith, and connecting means consisting of a pair .of conductors each laving embodied,

therein a special resistance alloy and each having substantial width and Aminimum thickness and bothvlying- Hat together with a minimum space between them atthe major portion'of their length.

In testimony whereof I have signed my. Y .name to/this specication.

ABLE YTTERBERG. 

